|Publication number||US2698764 A|
|Publication date||Jan 4, 1955|
|Filing date||Feb 6, 1952|
|Priority date||Feb 6, 1952|
|Publication number||US 2698764 A, US 2698764A, US-A-2698764, US2698764 A, US2698764A|
|Inventors||Holland Gordon M|
|Original Assignee||Western Electric Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (7), Classifications (13)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Jan. 4, 1955 Filed Feb. 6, 1952 G. M. HOLLAND GRAPPLE 2 Sheets-Sheet 1 INVENTOR c. M-HOLLAND ATTORNEY J 4, 1955 G. M. HOLLAND 2,698,764
GRAPPLE Filed. Feb. 6, 1952 2 Sheets-Sheet 2 FIG. 3
INVENTOR G. M HOL LAND .4 TTORNEY United States PatentO 2 Claims. (Cl. 294-67) This invention relates to grapples, and more particularly to grapples suitable for handling reels.
, In the manufacture of wires and cables, it frequently 7 i is necessary to transport heavy reels of wire from one factory area to another. The sides of such reels. are ordlnarily provided with circular flanges, and it is customary to allow the reels to rest on the rims of their flanged sides so that they can be maneuvered along the factory floor to some extent. At other times it may be more desirable to have the reels resting on one of their flat sides. For example, in some arrangements for paying off wire from areel, it is preferred to have the reel resting on one side.
When a reel must be transported from one location to another, the hub of the reel'may conveniently be-engaged by a pair of clamping arms of a' grapple supported from some type of overhead conveyor. fore known for transporting a reel have generally been designed to carry the suspended reel with the sides thereof in vertical planes, and to pick up and deposit the reel in that position. Where it is desired to have the reel rest on one of its sides in one location and to rest on the rims of its flanges in another location, considerable labor has been involved in properly positioning the reel before or after its travel on an overhead conveyor.
In the manufacture of wires and cables, reels may be employed which, with their contents, may weigh as much as 800 lbs. Consequently, it is necessary to have mechanical facilities for turning and positioning such reels, and the apparatus provided for this purpose must be quite sturdy. Various devices are available for rotating the axis of a reel while it rests at the floor level, but heretofore no such device has been incorporated into a suspended grapple carried by an overhead conveyor.
An object of this invention is to provide new and improved grapples.
A further object of the invention, is to provide new and improved grapples suitable for handling reels.
Another object of the invention is to provide new and improved suspended grapples for transporting and positioning reels.
A grapple illustrating certain features of the invention may include a frame capable of being suspended, a pair of relatively movable jaws carried by the frame for engaging and supporting a reel, means for moving the jaws toward and away from each other and means for rotating the jaws to rotate the axis of a reel carried by the jaws.
A complete understanding of the invention may be obtained from the following detailed description of an apparatus forming a specific embodiment thereof, when read in conjunction with the appended drawings, in which:
Fig. l is a front elevation of a grapple embodying the invention shown engaging a reel;
Fig. 2 is a view corresponding with Fig. l, but with the axis of the reel rotated 90 and the reel resting upon a transfer car, and
Fig. 3 is an enlarged side elevation of the grapple in the position shown in Fig. 2.
Referring now in detail to the drawings, a grapple 10 embodying the invention is designed to engage a reel 11, the sides of which are provided with circular flanges 12-12. From a position in which the rims of the flanges 12-12 rest upon a floor 13, the reel 11 may be elevated, its axis rotated 90", and then the reel may be deposited upon a transfer car 14 with the'flanges 12-12 in a horizontal position. The transfer car 14 is The means heretot provided with a plurality of spaced, horizontal rollers 15-15 between which the grapple 10 may enter in depositing or removing a reel therefrom. The reel may be shoved across these rollers onto a supply stand (not shown) at an operating station in another factory location.
The grapple 10 includes a generally L-shaped frame, having a horizontal leg 16 suspended from a twin hook hoist movable along an overhead conveyor. (not shown) and a vertical leg 17 extending downwardly from one end of-the horizontal leg 16. Both of these legs are constructed of spaced, parallel channels suitably joined together. As shown in Figs. 1 and 2, a pair of channels 18-18 forming the vertical leg 17 are joined by a plate 19 at the top of the leg and by another plate 20 at the bottom of the leg. The grapple 10 is suspended from the hoist on the overhead conveyor by a pair of cables 21-21, which pass around a pair of sheaves 22-22 journalled near the opposite extremities of the upper leg 16 of the grapple. At the juncture of the" legs 16 and 17' there are secured a pair of handles 23-23 .that an operatorv may grasp in case it'may become necessaryto swing the grapple slightly away from its normal suspended position.
A pair of relatively movable jaws 25-25 together form a generally U-shaped clamp carried by the vertical leg 17 v of the grapple. The jaws 25-25 are slidably engaged by a pair of aligned, similarly threaded shafts 26-26 journalled within a housing 27 secured to a plate 28 mounted upon a rotatable hollow shaft 29 which extends between the channels 18-18 of the vertical leg 17 of the grapple. One end of a second rotatable shaft 30, which extends concentrically through the axial center of the shaft 29, is provided with a bevel gear 31 which meshes with a pair of bevel gears 32-32 secured to adjacent ends of the threaded shafts 26-26. By suitably turning a hand wheel 33 secured to the other end of the shaft 30, both of the jaws 25-25 may be moved toward or away from each other.
The concentric shafts 29 and 30 are arranged to permit independent rotation of each, the rotation of the shaft 30 serving to cause relative motion between the jaws 25-25, and the rotation of the shaft 29 being effective to rotate these jaws and a reel carried thereby about the axis of this shaft. The rotation of the jaws 25-25 is carried out in steps, since this motion is used only to turn a reel from a position in which its flanged sides are vertical to a position in which its sides are in a horizontal plane, and vice versa.
The rotation of the shaft 29 is effected by actuation of a handle 34 secured thereto and extending radially outward therefrom. A latch 35 pivotally secured to the handle 34 near the outer end thereof is provided with a spring 36 which is attached to a lug 37 mounted on another portion of the handle. One end of a rod 38 is pivotally secured to the latch 35, and the other end of the rod 38 is pivotally joined to a pawl 39 pivotally mounted on a lug 40 protruding from the inner end of the handle 34. The pawl 39 may selectively engage one of four notches 41-41 spaced 90 apart on the periphery of a disc 42 which functions as a ratchet surrounding the concentric shafts 29 and 30 and is secured to the vertical leg 17 of the grapple.
Ordinarily, the shaft 29 is prevented from rotating by the engagement of the pawl 39 with one of the notches 41-41. An operator may squeeze the latch 35 against the end of the handle 34, thereby moving this latch arcuately about a pivot point 44 and raising the pawl 39 away from the notches on the disc 42. This action permits the handle 34 to be actuated to rotate the shaft 29 and the jaws 25-25. When squeezing of the latch 35 is stopped, the spring 36 through its influence on the latch 35 and the rod 38 urges the pawl 39 against the periphery of the disc 42, and the pawl slides along the periphery of the disc until it falls into engagement with one of the notches 41-41, thereby halting the rotation of the shaft 29. Thus, the rotation of the jaws 25-25 may conveniently be halted after a 90 turn. When the jaws 25-25 engage a reel, a pair of conical projections 43-43 carlried by the jaws fit into the hub of and support the rec Grapples embodying the invention are admirably suited for transportation operations in which a reel must be elevated and the axis of the reel must be rotated to change therplane in which flanged sides ofthe reel, lie when it i s at rest. Since'both actions anbe performed by" the samefpiece'ofiequipment, the handling'ofreels" is greatly facilitated. ,The structure of this grappleis not-complicatd; and it provides a sturdy" and reliablemean's"for eliminating an otherwise'very laboriousoperation.
What is claimed is: V
1.1 A grapple for reels, which comprises a generally L-sh'a'ped frame having a horizontal leg providedKwith means for sus pending the frame and having a'vertical leg extending downwardly therefrom,- a rotatable shaft mounted liorizontally'o'n the verticaljleg; a pair of threadea members carried at one end of said ro'tatable'shaft', a'p'airfof relatively movable jawsm'ounte'd'on' theth'readed rneinb'ers'and design'ed to engage areel hubto support-a reel, means mounted on the" shaft for simultaneously rotating'the threaded members and thereby moving the jaw":towardand awayfrom'eacho'thei', ahandle extending radially outward from-the shaft for-rotating the shaftto cailse rotation of the axl'sof a reel carii'edby the jaws, a circular "ratchetsecur'ed to 'the' vertical legiof thefrarn'e and surf'o'uiidingthe 'r'ot'atableshaft, said ratchet havin ,natcnesspma at 90intervalson the periphery thereof, a pawl mountedpivotlly'onthe inne'riend of said handle and associated withthe rotatable shaft for selectivelye'ngaging one of said notchesiwherebyflthe rotation'of the a'xis of the reel-maybe halted-selectively in'horizontal 'and'in' vertical positions, and "a latch mounted' pivotally'o'n the outer endio'f said handleand connected to the pawl-for actuating the pawl. I
H 2; A grapple for" reels, which comprises a generally L'-sh'aped frame having a horizontal 1eg provided with means forsuspen'ding the frameand having avertieal leg extending downwardly therefrom, a pair of independently rotatable concentric shafts extending horizontally through the vertical leg of-the frame, a housing mounted beneath the horizontal leg of the frame and secured to an end of one of said concentric shafts, a bevel gear secured to an end of one of said concentric shafts, a pair of aligned similarly threaded'sh'afts rotatably mounted in the housing with one end of each adjacent to said bevel gear, a pair of bevel gears one for each shaft secured to the adjacent ends of the'similarly threaded shafts and in meshing engagement with the first-mentioned bevel gear, a pair of relatively movable: jaws mounted in threaded engagement with the similarly threaded shafts so that rotation of one of'saidconcentric shafts simultaneously causes both jaws to move toward and away from each other'and-so'th'atrotation of the other one of said concentric shafts causes the jaws to rotate simultaneously about the axis of the concentric shafts, said jaws having a'pair of conical projectionydesigned'to engage a reel hub to" supporta reel,- aii actuatinghandlesecured to the concentridsl't'aft thatcatlses r'otation-of the jaws; a cir'ciilar ratchetsecure-Meme vertical leg of the fiame-and'surrou'nding the concentric shafts, said ratchet having notches spaced at '9'0 intervals on' the periphery thereof, ah'd a pawl-pivo'tally a's'sociated'with the h'andle for seleetivelw'e'nga'giri'g one of said notches whereby rotation of'the axis of a'reelear'rie'd by the jaws may-'be halted selectively in horizontal and in vertical positions.
Refrences Citd in"thefile of this patent UNITED STATES PATENTS 51633 WelImanet'all Aug. 7; 1900 1,047,257 Loubriat' Dec. 17, 1912 1,615,115 Du'rhan Jan; 18, 1927
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|Citing Patent||Filing date||Publication date||Applicant||Title|
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|US4579380 *||Dec 6, 1983||Apr 1, 1986||Carnegie-Mellon University||Servo robot gripper|
|US8444366 *||Dec 16, 2010||May 21, 2013||Jerry Allen Cole||Forklift adapter|
|US20120153654 *||Jun 21, 2012||Jerry Alan Cole||Forklift adapter|
|WO1982001182A1 *||Sep 22, 1981||Apr 15, 1982||Fa F Palfinger||Gripping device|
|U.S. Classification||294/67.22, 294/119.1, 294/67.33, 294/86.41, 294/67.5|
|International Classification||B65H49/00, B66C1/62, B66C1/66, B65H49/32|
|Cooperative Classification||B66C1/66, B65H49/32|
|European Classification||B66C1/66, B65H49/32|